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Umnica [9.8K]
3 years ago
5

Which are electromagnetic waves? Check all that apply.

Physics
1 answer:
Scrat [10]3 years ago
4 0

Answer:

infrared waves

radio waves

ultraviolet waves

Explanation:

Radio waves are used for communication such as television and radio.

Infrared light is used by electrical heaters, cookers for cooking food, and by infrared cameras which detect people in the dark.

Ultraviolet radiation can kill bacteria that are present in water - this sterilises the water and makes it safe to drink.

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When frequency division multiplexing (FDM) is used to aggregate several modulated channels together, no separation between chann
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Answer:

False.

Separation between channel is required when frequency division multiplexing (FDM) is used to aggregate several modulated channels together.

Explanation:

In Frequency Division Multiplexing (FDM), the total bandwidth is divided to a set of frequency bands that do not overlap. Each of these bands is a carrier of a different signal that is generated and modulated by one of the sending devices.

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3 years ago
How much force is needed to push a 20kg at 0.2 m/s/s<br> A)10 N<br> B)20 N<br> C)4 N<br> D)40 N
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4

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20x.2=4

4 0
2 years ago
Dr. Wolski does research on the potential relationship between neurotransmitter deficiencies and mood states. Which psychologica
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Bio psychology

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Since, Dr. Wolski does research on the potential relationship between neurotransmitter deficiencies and mood states. His psychological specialty must be biological psychology.

Biological psychology, or bio psychology, is a discipline in which scientific investigation and clinical practice investigates the relation between brain and body. In this area scholars evaluate the biological basis of feelings, impulses and behaviors.

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